***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Mar 07, 2025                                                         *
*                                                                     *
*This SPICE Model describes the characteristics of a typical device   *
*and does not respresent the specification. Designer should refer to  *
*the same type name data sheet for specification limits.              *
***********************************************************************
*$
.subckt BZT52-C11S-AU A K 
.param
+vc0 = 1.773e-10		      vc1 = 5.316e-12			vc2 = 1.000			vc3 = 2.507e-12			vc4 = 4.084e-1
+tc1 =1.551e-2			tc2 = 1.103e-2		      tc3 = 2.151e-2		tc4 = 2.563e-2
.func irexp(v) {(vc0+vc1*v**vc2)*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc3*exp(vc4*v))*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
d1 A K zener
g1 K A value = {irexp(v(K,A))}
.model zener d
***** flag parameter *****
+level = 1
***** dc model parameter *****
+ is = 4.048e-16		       n = 1.023		        rs = 1.361e-1
+ibv = 5.000e-3			 nbv = 0.7		  bv = 11
+ikf = 2.571e-1
***** capacitance parameter *****
+cjo = 4.409e-11		   m = 3.239e-1		  vj = 5.525e-1
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25			  eg = 1.100		 xti = 3
+trs1 = 1.859e-4		  tikf = 1.073e-2
+tbv1 = 6.626e-4		  tbv2 = -2.056e-8	
.ends BZT52-C11S-AU
*$
